8205970529 has 4 divisors (see below), whose sum is σ = 8488935060. Its totient is φ = 7923006000.

The previous prime is 8205970523. The next prime is 8205970541. The reversal of 8205970529 is 9250795028.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4551526225 + 3654444304 = 67465^2 + 60452^2 .

It is a cyclic number.

It is not a de Polignac number, because 8205970529 - 2²⁰ = 8204921953 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8205970523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141482222 + ... + 141482279.

It is an arithmetic number, because the mean of its divisors is an integer number (2122233765).

Almost surely, 2^8205970529 is an apocalyptic number.

It is an amenable number.

8205970529 is a deficient number, since it is larger than the sum of its proper divisors (282964531).

8205970529 is a wasteful number, since it uses less digits than its factorization.

8205970529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282964530.

The product of its (nonzero) digits is 453600, while the sum is 47.

The square root of 8205970529 is about 90586.8121141262. The cubic root of 8205970529 is about 2017.0189771688.

The spelling of 8205970529 in words is "eight billion, two hundred five million, nine hundred seventy thousand, five hundred twenty-nine".